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Testing a claim from a data set.

Use the data set below to test the claim that more than 50% of the are at least 415. data set 350,527,480,410,360,470,390,510,430,452,341,385,380,409,500,377,400,380,420,460

Subject:

Statistics

Topic:

All Topics

Posting ID:

3050

OTA ID:

102454

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Calculating the probability from a given situation.

An instructor has a test bank consisting of 300 easy true-false questions, 200 difficult true-false questions, 500 easy multiple choice questions and 400 difficult multiple choice questions. If a question is selected at random from the test bank, what is the probability that it will be: a) An easy question b) An easy multiple choice question c) An easy question, given that it is a multiple choice question

Subject:

Statistics

Topic:

All Topics

Posting ID:

3064

OTA ID:

102799

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Probability

A manager must select from among ten persons to fill four job openings. Four of the candidates belong to a minority group. If the four positions are filled at random by the candidates, what is the probability that no minority group member will be selected?

Subject:

Statistics

Topic:

All Topics

Posting ID:

3065

OTA ID:

102799

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Hypothesis Testing

The Boston Weather Services (BWS) says that the mean high temperature for October in a city is 56E F. You believe that it is lower. A sample of 31 mean October temperatures yields mean 54.0E F and standard deviation 5.6 E F. Test the BWS claim at V = 0.01.

Subject:

Statistics

Topic:

All Topics

Posting ID:

3122

OTA ID:

101327

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Hypothesis Testing

Test the claim the : = 74.1 at V = 0.01 where n = 14, sample mean is 79.0 and sample standard deviation is 5.6. Please explain by using the traditional methods for testing hypotheses and showing the results of all steps in the process.

Subject:

Statistics

Topic:

All Topics

Posting ID:

3123

OTA ID:

101327

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